JP2007137545A - Elevator control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator control device capable of performing safe and efficient operation by avoiding any interference of cars with each other without requiring any zone setting. <P>SOLUTION: At least two cars 12a, 12b capable of independently traveling in the same shaft are provided. An interference avoidance unit 15 provided on an elevator control device 11 determines whether or not the cars 12a, 12b are interfered with each other based on the operational states of the cars 12a, 12b obtained from an operation control unit 13 and the present positions of the cars 12a, 12b obtained from a car position detection unit 14. When the interference is determined, the interference avoidance unit 15 gives an instruction to the operation control unit 13 so that an imaginary call of an optimum floor to be adequately set according to the operational states of the cars 12a, 12b is registered to one of the cars 12a, 12b. Thus, any interference of the cars 12a, 12b is avoided, and the safe and efficient operation can be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator control apparatus having a plurality of independent cars in the same shaft.

  In a building with high elevator use efficiency such as a high-rise building, an elevator in which a plurality of independent cars are put into service in one shaft (hoistway) is used. Such an elevator is called a “multi-car elevator”.

  This multi-car elevator can be expected to improve transportation efficiency because each car can move independently as compared to a double deck elevator. However, unlike a double-deck elevator in which two cars are always connected, there is a possibility that cars in the same shaft may collide with each other if the operation method is incorrect. For this reason, special control is required to improve transportation efficiency while reliably preventing collisions between cars.

  Here, in the multi-car elevator, several proposals have been made as methods for improving transportation efficiency while preventing the cars from approaching each other.

  For example, Patent Document 1 proposes a method of providing an upper car dedicated zone, a lower car dedicated zone, and a shared zone for both cars, determining whether the car can enter when the common zone enters, and preventing interference between the upper and lower cars. ing. In this first patent document, a virtual call is created on the lowest floor of the upper car dedicated zone when the upper car enters the common zone, and the uppermost of the lower car dedicated zone when the lower car enters the common zone. Creating a virtual call on the floor is disclosed.

Further, in Patent Document 2, in the allocation of cars, the possibility of interference between upper and lower cars is calculated from the calculation result of the predicted arrival time to each floor, and a plan for evacuation is made to prevent car interference in advance. is suggesting.
JP 2003-160283 A JP 2000-226164 A

  However, in the first patent document, for example, when a user gets on an elevator from a dedicated zone floor, the movable range from there is significantly limited, and when the user gets on an elevator from a common zone floor, the user responds to the floor. There is a problem that the movable range changes depending on whether the car is an upper car or a lower car. In addition, when the number of elevators in the same hoistway becomes three or more, there are problems such as complicated zone setting and group management control.

  Further, in the first patent document, when avoiding the interference between the upper car and the lower car, the upper car is a specific floor (the upper car is the lowest floor of the upper car dedicated zone, the lower car, regardless of the current operation state). Has created a virtual call on the top floor of the lower car dedicated zone and forcibly avoids it, resulting in a decrease in driving efficiency.

  Further, in the second patent document, since the operation of temporarily retracting the car occurs, there is a problem that the user who is on the board is confused and the driving efficiency is lowered.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an elevator control device that can perform safe and efficient operation without requiring zone setting and avoiding interference between cars.

  An elevator control apparatus according to claim 1 of the present invention is an elevator control apparatus having at least two cars that can travel independently in the same shaft, and an operation control means for controlling the operation state of each of the cars. Car position detection means for detecting the current position of each car, the driving state of each car obtained from the operation control means, and the current position of each car obtained from the car position detection means. An interference judging means for judging whether or not each of the cars interferes, and when it is judged by the interference judging means that each of the cars interferes, On the other hand, there is provided interference avoiding means for registering an optimal virtual floor call appropriately set according to the operation state of each car and avoiding the interference of each car. And butterflies.

  According to a second aspect of the present invention, in the elevator control device according to the first aspect, the interference judging means is configured such that the front car is stopped or decelerating with respect to the traveling direction, and the car is behind the car. If the distance of the car that is traveling is less than or equal to a predetermined distance, it is determined that the respective cars interfere with each other, and the interference avoiding means receives the determination result of the interference determining means, The virtual call of the floor before the stop floor or the next scheduled stop floor of the front car is registered for the car.

  According to a third aspect of the present invention, in the elevator control apparatus according to the first aspect, the interference judging means is such that the front car is stopped with respect to the traveling direction, and the car travels backward. When the distance from the next stop scheduled floor of the car in the middle is not more than a predetermined distance, it is determined that each of the cars interferes, and the interference avoidance means receives the determination result of the interference determination means, and The virtual call of the floor ahead of the registration floor of the last car call of the said back car is registered with respect to a front car.

  The elevator control device according to claim 4 of the present invention is an elevator control device having at least two cars that can travel independently in the same shaft, and an operation control means for controlling the operation state of each of the cars. Car position detection means for detecting the current position of each car, the driving state of each car obtained from the operation control means, and the current position of each car obtained from the car position detection means. An interference judging means for judging whether or not each of the cars interferes, and when the interference judging means judges that each of the cars interferes, at least one car of each of the cars And an interference avoiding means for adjusting the door opening time to avoid the interference of each car.

  According to a fifth aspect of the present invention, in the elevator control device according to the fourth aspect, the interference judging means is such that the front and rear cars are stopped in the traveling direction, and the front car is stopped. If the distance between the next stop planned floor and the next stop planned floor of the rear car is equal to or less than a predetermined distance, it is determined that the respective cars interfere with each other, and the interference avoidance means determines the result of the interference determination means In response, the door opening time of the forward car is shortened from the normal time.

  According to a sixth aspect of the present invention, in the elevator control device according to the fourth aspect, the interference judging means is such that the front and rear cars are stopped in the traveling direction, and the front car is stopped. If the distance between the next stop planned floor and the next stop planned floor of the rear car is equal to or less than a predetermined distance, it is determined that the respective cars interfere with each other, and the interference avoidance means determines the result of the interference determination means In response, the door opening time of the rear car is extended more than usual.

  According to a seventh aspect of the present invention, in the elevator control apparatus according to the first or fourth aspect, the user in the car to be operated by the interference avoiding means is informed that the interference avoiding operation is being performed. It further has guide means.

  According to an eighth aspect of the present invention, there is provided the elevator control apparatus according to the seventh aspect, further comprising display means provided in each of the cars and audio output means provided in each of the cars. The guide means guides that the interference avoiding operation is being performed through at least one of the display means and the sound output means.

  According to the present invention, it is possible to perform safe and efficient operation without the need for zone setting by avoiding interference between cars in a multi-car elevator by registering a virtual call or adjusting a door opening time. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing a configuration of an elevator control device according to a first embodiment of the present invention. Here, a configuration as a multi-car elevator in which two cars are provided in the same shaft (hoistway) is shown. Note that basic drive mechanisms as an elevator, such as an inverter, a hoisting machine, and a rope, are omitted.

  The elevator control device 11 is installed, for example, in a machine room or the like, and performs operation control of the entire elevator. The elevator control device 11 includes a computer having a CPU, a ROM, a RAM, and the like, and controls the operation of the cars 12a and 12b according to an operation control program incorporated in advance.

  In the present embodiment, the elevator control device 11 includes an operation control unit 13, a car position detection unit 14, an interference avoidance unit 15, and an avoidance operation guide unit 16.

  The operation control unit 13 monitors the operation state of the cars 12a and 12b and individually controls each operation. The car position detector 14 detects the current position of each of the cars 12a and 12b. As a car position detection method, for example, a plurality of position detection sensors are arranged in a hoistway and detected based on signals from these sensors, or driving corresponding to each of the cars 12a and 12b. There is a method of detecting based on the signal of the system.

  The interference avoiding unit 15 causes the cars to interfere with each other during driving based on the driving state of the cars 12a and 12b obtained from the driving control unit 13 and the current positions of the cars 12a and 12b obtained from the car position detecting unit 14. It has a judgment means which judges whether to do. When it is determined by the determining means that the cars may interfere with each other, a command for avoiding the interference is issued to the operation control unit 13.

  In addition, the avoidance operation guide unit 16 provides a guidance to that effect to a user in the car that is an operation target for interference avoidance by displaying a message or outputting a voice.

  The cars 12a and 12b exist in the same shaft. In the example of FIG. 1, the car 12 a exists as an upper car and the car 12 b exists as a lower car, and each can run independently. Display units 17a and 17b and audio output units 18a and 18b are provided on the cars 12a and 12b, respectively.

  The display unit 17a is composed of, for example, a liquid crystal display and is installed at a predetermined location in the car 12a and displays an interference avoidance guidance message sent from the avoidance operation guidance unit 16. The same applies to the display unit 17b. The audio output unit 18a is formed of, for example, a speaker, and is installed at a predetermined location in the car 12a. The audio output unit 18a outputs a message for interference avoidance guidance sent from the avoidance operation guide unit 16 as audio.

  FIG. 2 is a diagram for explaining an interference avoiding operation in the first embodiment. In the figure, white circles indicate car calls and black circles indicate virtual calls. The car call is call information registered by pressing a destination floor button (not shown) provided in the car, and is arbitrarily registered by a user in the car. On the other hand, the virtual call is call information that is virtually registered to avoid interference.

  Now, as shown in FIG. 2A, it is assumed that the car 12a, which is the upper car, is in the ascending operation with the car calls registered on the x-th floor and the z-th floor, respectively. Further, it is assumed that the car 12b which is the lower car is in the ascending operation with a certain distance from the car 12a in a state where the car call is registered on the y-th floor. Note that x floor <y floor <z floor.

  A car position detector 14 provided in the elevator control device 11 periodically detects the positions of the cars 12a and 12b in the hoistway (for example, every 100 msec). The interference avoidance unit 15 is based on the position information obtained by the car position detection unit 14 and the operation state information such as registration of car calls and landing calls obtained from the operation control unit 13 and allocation states. Predict whether or not will interfere.

  Interference here means that cars in the same shaft come into contact with each other during operation. In addition, the driving | running | working which each car faces each other shall be fundamentally prohibited.

  In order to avoid such interference between cars traveling in the same direction, the car 12a in front of the traveling direction stops next, depending on the structure of the car and the spacing between floors of the building. It is necessary to stop the rear car 12b at least on the floor before the first floor from the floor (the x floor in the example of FIG. 2).

  Here, the stop distance of the car is calculated by the rated load, speed, acceleration, etc. of the elevator. Accordingly, when the interference avoiding unit 15 predicts that the rear car 12b catches up and interferes while the car 12a is stopped on the x floor, the interference avoiding part 15 also determines the distance required for the car 12b to stop from the current position. Consider the virtual call registration floor. In this example, as shown in FIG. 2B, a virtual call is registered on the w-th floor.

  As a result, the car 12b is temporarily stopped at the w-th floor, and can be prevented from interfering with the car 12a currently stopped at the x-th floor. In order to avoid unnecessary interference avoidance operation, the floor is not in contact with the car in front of the traveling direction, and is the floor closest to the stop floor of the car in front, for example, at least one floor before the stop floor. A virtual call shall be registered.

Next, a specific processing operation will be described with reference to FIG.
FIG. 3 is a flowchart showing an elevator operation control process according to the first embodiment of the present invention. Note that the processing shown in this flowchart is executed by the elevator control device 11 being a computer reading a predetermined program. The cars 1A and 1B in the flowchart correspond to the cars 12a and 12b in the example of FIG.

  First, the interference avoidance unit 15 provided in the elevator control device 11 calculates the safety distance between the car 12a and the car 12b based on the elevator specifications (car size, distance between floors, acceleration, etc.). (Step S101). The safety distance referred to here is, for example, even if the car 12a traveling in front starts to decelerate first and the car 12b traveling in the rear starts to decelerate later, the car 12b Is a distance that can be safely stopped on a floor that does not interfere with the car 12a.

  Next, the interference avoidance unit 15 acquires the driving state and the current position of the car 12a ahead of the traveling direction from the driving control unit 13 and the car position detection unit 14 (step S102). The operation state includes the traveling direction of the car, the speed, the car call registration state, the hall call assignment state, and the like. Then, the interference avoidance unit 15 determines whether the car 12a is stopped or decelerated based on the information acquired in step S102 (step S103). As a result, if the car 12a is traveling (No in step S103), there is no need to avoid interference, and the process returns to step S102.

  On the other hand, if it is determined that the car 12a is stopped or decelerating (Yes in step S103), there is a possibility of interfering with the car 12b that is traveling behind the car 12a, so the process proceeds to the next step S104.

  That is, when the car 12a is stopped or decelerating, the interference avoidance unit 15 acquires from the operation control unit 13 the floor at which the car 12a is currently stopped or the floor scheduled to stop next (step S104). ).

  Subsequently, the interference avoidance unit 15 acquires the driving state of the car 12b from the driving control unit 13 (step S105), and the car 12b is traveling in the same direction as the car 12a based on the acquired information. Whether or not (step S106). As a result, if the car 12b is traveling in the same direction (Yes in step S106), the process proceeds to step S107. If the car 12b is not traveling in the same direction, that is, if the car 12b is traveling in the opposite direction to the car 12a or is stopped (No in step S106), Since there is no need to avoid interference, the process returns to step S102.

  When the car 12b is traveling in the same direction, the interference avoidance unit 15 acquires the current position of the car 12b from the car position detection unit 14 (step S107). The interference avoidance unit 15 calculates the relative distance between the position of the car 12a obtained in step S104 and the position of the car 12b obtained in step S107 (step S108).

  Here, the interference avoidance unit 15 compares the relative distance calculated in S108 with the safety distance calculated in Step S101 (Step S109). As a result, when the relative distance is larger than the safety distance (No in step S109), it is determined that the car 12a and the car 12b do not interfere with each other, and the process returns to step S102. On the other hand, if the relative distance is equal to or less than the safe distance (Yes in step S109), it is determined that the car 12a and the car 12b may interfere with each other, and the process proceeds to step S110.

  That is, when the relative distance is equal to or less than the safe distance, the interference avoiding unit 15 sends a virtual call to the rear car 12b at least on the floor before the next floor to be stopped or the next floor scheduled for the next stop. An instruction is issued to the operation control unit 13 to perform registration (step S110). Thereby, a virtual call is registered with respect to the car 12b through the operation control unit 13, and the car 12a is temporarily stopped on the registration floor of the virtual call, and interference with the car 12a can be avoided.

  At this time, the avoidance operation guide unit 16 receives information on the avoidance operation from the driving control unit 13 and thereby avoids the avoidance operation through the display unit 17b or the voice output unit 18b provided in the car 12b that is the target of the avoidance operation. Guidance is given to the effect (step S111). As an example of the guidance at this time, “Because the elevator in front of the traveling direction is stopped, this will also stop. Please wait for a while”. Further, in order to reliably transmit the guidance to the user, message display and voice guidance may be used in combination.

  Thus, according to the first embodiment, when the car 12b approaches the car 12a and it is determined that there is a high possibility of interference, the optimal floor set according to each driving state is determined. A virtual call is registered on the floor and the car 12b is temporarily stopped. Thereby, it is possible to operate safely and efficiently by avoiding the interference of the cars 12a and 12b without requiring zone setting.

  In addition, by giving a message or voice to the passenger in the car that is the target of the avoidance operation that the interference avoidance operation is in progress, the user may stop at the floor that the user did not intend. Anxiety can be reduced.

  Here, the description has been made assuming that the cars 12a and 12b are traveling in the upward direction, but the same applies to the case where the cars 12a and 12b are traveling in the downward direction. In order to avoid interference with the car 12a which comes after 12b becomes a forward car, a virtual call is registered for the car 12a.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  In the first embodiment, interference avoidance is performed by registering a virtual call in the rear car with respect to the traveling direction, but in the second embodiment, a virtual call is registered in the front car. It is characterized in that interference avoidance is performed.

  FIG. 4 is a diagram for explaining an interference avoiding operation in the second embodiment. In the figure, white circles indicate car calls and black circles indicate virtual calls.

  Now, as shown in FIG. 4 (a), it is assumed that the car 12a, which is the upper car, has responded to the final car call on the xth floor and has finished service. Further, it is assumed that the car 12b as the lower car is responding to the car call on the y-th floor. Note that x floor <y floor <z floor.

  Here, the final car call is a car call that finally responds among the car calls registered in the car. At this time, the interference avoidance unit 15 has already stopped the service by the car call registration floor (y floor) of the car 12b based on the position information from the car position detection unit 14 and the operation state information of the operation control unit 13. If it is confirmed that it is a floor before or at the same level as the stop floor (x floor) of the car 12a, it is determined that it is necessary to avoid interference. Then, as shown in FIG. 4B, the operation control unit 13 is caused to register a virtual call on the z floor of the car 12a.

  The z floor, which is the virtual call registration floor, is a floor ahead of the y floor. Therefore, the car 12a after the service is moved to the z-th floor can prevent interference with the car 12b coming later.

Next, a specific processing operation will be described with reference to FIG.
FIG. 5 is a flowchart showing an elevator operation control process according to the second embodiment of the present invention. Note that the processing shown in this flowchart is executed by the elevator control device 11 being a computer reading a predetermined program. The cars 1A and 1B in the flowchart correspond to the cars 12a and 12b in the example of FIG.

  First, the interference avoidance unit 15 provided in the elevator control device 11 calculates the safety distance between the car 12a and the car 12b based on the elevator specifications (car size, distance between floors, acceleration, etc.). (Step S201). The safety distance referred to here is, for example, even if the car 12a traveling in front starts to decelerate first and the car 12b traveling in the rear starts to decelerate later, the car 12b Is a distance that can be safely stopped on a floor that does not interfere with the car 12a.

  Next, the interference avoidance unit 15 acquires the driving state and the current position of the car 12a ahead of the traveling direction from the driving control unit 13 and the car position detection unit 14 (step S202). The operation state includes the traveling direction of the car, the speed, the car call registration state, the hall call assignment state, and the like. In this case, in the example of FIG. 4, it is acquired that the car 12a ahead in the traveling direction is stopped in response to the final car call.

  Subsequently, the interference avoidance unit 15 acquires the operation state of the car 12b from the operation control unit 13 (step S203), and acquires the floor of the last car call of the car 12b (step S204).

  Here, the interference avoidance unit 15 calculates the distance between the floor at which the car 12b next stops and the stop floor of the car 12a from the information acquired in steps S203 and S204 (step S205). Then, it is determined whether or not the calculated distance is equal to or less than the safety distance calculated in step S201 (step S206). As a result, when the distance between the stop floor next to the car 12b and the stop floor of the car 12a is larger than the safety distance (No in step S206), it is determined that the car 12a and the car 12b do not interfere with each other. Then, the process returns to step S102. On the other hand, if the distance is equal to or less than the safe distance (Yes in step S206), it is determined that the car 12a and the car 12b may interfere with each other, and the process proceeds to step S207.

  That is, if the distance between the stop floor next to the car 12b and the stop floor of the car 12a is equal to or less than the safe distance, the interference avoidance unit 15 registers the virtual call of the car 12a to the operation control unit 13. An instruction is given (step S207). The floor of the virtual call in this case is a floor that is more than the safe distance from the floor of the last car call of the car 12b. Thereby, the front car 12a is forcibly moved to the virtual call floor through the operation control unit 13, and interference with the car 12b coming later can be avoided.

  At this time, the avoidance operation guide unit 16 receives information on the avoidance operation from the driving control unit 13 and thereby avoids the avoidance operation through the display unit 17b or the voice output unit 18b provided in the car 12a that is the target of the avoidance operation. Guidance is given to the effect (step S208). As an example of the guidance at this time, “Because the rear elevator is approaching, the stop position will be changed. Please note”. Further, in order to reliably transmit the guidance to the user, message display and voice guidance may be used in combination.

  As shown in the example of FIG. 4, when the car 12a in the front is in service and stopped, there is basically no user in the car, so the guidance in step S208 is omitted. May be.

  In step S207, for example, when the car 12a is stopped on the floor near the top floor and cannot be moved to a floor that is more than the safe distance from the floor of the last car call of the car 12b. As in the first embodiment, the car 12b is stopped by a virtual call.

  As described above, according to the second embodiment, even when the preceding car is stopped after stopping the service first, it is stopped by the virtual call so as not to affect the progress of the rear car. Interference can be avoided by moving the car a to another floor.

  Here, the description has been made assuming that the cars 12a and 12b are traveling in the upward direction, but the same applies to the case where the cars 12a and 12b are traveling in the downward direction. A virtual call is registered for the car 12b in order to prevent the car 12b from interfering with the car 12a.

(Third embodiment)
Next, a third embodiment of the present invention will be described.

  In the first and second embodiments, interference avoidance is performed by registering a virtual call. In the third embodiment, interference avoidance is performed by adjusting the door closing time of the car.

  FIG. 6 is a diagram for explaining an interference avoiding operation in the third embodiment. White circles in the figure indicate car calls.

  Now, assume that the car 12a is stopped on the x floor and the next car call is registered on the y floor and the z floor. In addition, it is assumed that the car 12b is stopped on the w floor and the next car call is registered on the y floor. Note that x floor <y floor <z floor. Further, in this example, w floor <x floor.

  Here, when the cars 12a and 12b are directed to the y-th floor at the same time, the interference avoiding unit 15 stops the car 12a on the y-th floor based on the assigned state of the car call and the hall call obtained from the operation control unit 13. It is determined whether the car 12b catches up inside. As a result, when it is determined that the car 12b catches up, the interference avoidance unit 15 causes the car to the driving control unit 13 so that the preceding car 12a can leave the x floor and the y floor as soon as possible. The door opening time of the door 19a of 12a is shortened from the normal time. Thereby, the stop time in the x floor and the y floor of the front car 12a is shortened, and interference with the rear car 12b can be avoided.

  As another method, in order to delay the timing at which the rear car 12b departs from the w floor, the opening time of the door 19b of the car 12b is extended so that the stop time at the w floor can be reduced. You can make it longer. Further, the opening time of both the front car 12a and the rear car 12b may be adjusted to shorten the stop time of the car 12a and extend the stop time of the car 12b.

Next, a specific processing operation will be described with reference to FIG.
FIG. 7 is a flowchart showing the operation control process of the elevator according to the third embodiment of the present invention. Note that the processing shown in this flowchart is executed by the elevator control device 11 being a computer reading a predetermined program. The cars 1A and 1B in the flowchart correspond to the cars 12a and 12b in the example of FIG.

  First, the interference avoidance unit 15 provided in the elevator control device 11 calculates the safety distance between the car 12a and the car 12b based on the elevator specifications (car size, distance between floors, acceleration, etc.). (Step S301). The safety distance referred to here is, for example, even if the car 12a traveling in front starts to decelerate first and the car 12b traveling in the rear starts to decelerate later, the car 12b Is a distance that can be safely stopped on a floor that does not interfere with the car 12a.

  Next, the interference avoidance unit 15 acquires the driving state and the current position of the car 12a ahead of the traveling direction from the driving control unit 13 and the car position detection unit 14 (step S302). The operation state includes the traveling direction of the car, the speed, the car call registration state, the hall call assignment state, and the like. In this case, in the example of FIG. 6, it is acquired that the car 12a ahead in the traveling direction is stopped in response to the final car call. Further, the interference avoidance unit 15 acquires the operation state and the current position of the rear car 12b from the operation control unit 13 and the car position detection unit 14 (step S303).

  Here, the interference avoidance unit 15 determines whether the cars 12a and 12b are stopped (step S304). In this case, if any of the cars 12a and 12b is traveling (No in step S304), the interference avoiding operation cannot be performed, and the process returns to step S302.

  When the cars 12a and 12b are stopped (Yes in step S304), the interference avoidance unit 15 acquires the next scheduled stop floors of the car 12a and the car 12b from the operation control unit 13 (step S305). ). Then, the interference avoidance unit 15 determines whether or not the next scheduled stop floor of the car 12b is more than the safety distance from the next planned stop floor of the car 12a (step S306). As a result, if the distance is greater than the safety distance (Yes in step S306), it is determined that no interference avoiding operation is necessary, and the process returns to step S302. On the other hand, if the distance is less than the safety distance (No in step S306), it is determined that an interference avoiding operation is necessary, and the process proceeds to step S307.

  That is, when it is determined that the next stop planned floor of the car 12b is not separated from the next stop planned floor of the car 12a by a safe distance, the interference avoidance unit 15 catches up with the preceding car 12a. The operation control unit 13 is instructed to adjust the door opening time of the cars 12a and 12b (step S307). Accordingly, the operation control unit 13 extends the door opening time of the rear car 12b beyond the normal time to delay the departure time, or shortens the door opening time of the preceding car 12a below the normal time. To speed up the departure time. In addition, you may adjust the door opening time of both the cars 12a and 12b.

  Further, at this time, the avoidance operation guide unit 16 receives information on the avoidance operation from the operation control unit 13 and provides guidance to the user in the car that is the target of the avoidance operation that the avoidance operation is being performed ( Step S308).

  Specifically, if the door opening time of the car 12a is to be shortened, “the rear car is approaching, the door through the display part 17a or the audio output part 18a provided in the car 12a. The opening time is shortened. Please be careful. ” Further, if the door opening time of the car 12b is to be extended, the display part 17b or the audio output part 18b provided in the car 12b is used to indicate that the door opening time is “Please adjust the length. Please be careful”. Note that a message display and voice guidance may be used in combination in order to reliably transmit the guidance to the user.

  Next, the interference avoidance unit 15 determines whether or not the car 12a has departed from the driving state information from the driving control unit 13 (step S309). If the car 12a has not yet departed (No in step S309), the process returns to step S307 to continue the interference avoiding operation.

  If it is confirmed that the car 12a has departed (Yes in step S309), the interference avoidance unit 15 again moves the next stop planned floor of the car 12b away from the next stop planned floor of the car 12a by a safety distance or more. It is determined whether or not there is (step S310). As a result, if the distance is less than the safety distance (No in step S310), the process waits until the safety distance is exceeded (step S311). When it is confirmed that the safety distance is exceeded (Yes in step S310), the interference avoidance unit 15 adjusts the door opening time with respect to the operation control unit 13 (in this case, the door opening time of the car 12a). (Extended) is canceled and an instruction is issued to leave the car 12b (step S312).

  Thus, according to the third embodiment, even when the front car 12a is in a state where the departure is delayed in response to more car calls or landing calls than the rear car 12b, at least one of them By adjusting the door opening time of the car, the normal operation can be continued while avoiding the rear car 12b catching up and interfering with the car 12a on the intermediate floor.

  Moreover, since the door opening time can be finely adjusted according to the driving state of the cars 12a and 12b, it is more efficient than virtual call registration as in the first and second embodiments, and There is an advantage that the user's anxiety can be reduced because the user does not stop at the floor that is not intended by the user.

  In addition, the user's anxiety can be reduced by guiding that the door opening time is adjusted to avoid interference.

  Here, the description has been made assuming that the cars 12a and 12b are traveling in the upward direction, but the same applies to the case where the cars 12a and 12b are traveling in the downward direction. In order to prevent interference with the car 12a that comes after the car 12b, the door opening time of the car 12b is shortened, or an interference avoiding operation such as extending the door opening time of the car 12a is performed. become.

  Further, the door opening time adjustment method in the third embodiment may be combined with the virtual call registration method described in the first and second embodiments. In this case, for example, when the cars 12a and 12b are approaching, interference avoidance is performed by adjusting the door opening time, and when traveling by some distance, interference avoidance is performed by registering a virtual call. Thereby, it is possible to reliably avoid the interference between the cars 12a and 12b traveling in the same direction, and to realize safer and more efficient driving.

  As described above, in a multi-car elevator, it is possible to prevent interference with each other without restricting the travel ranges of the cars 12a and 12b that can travel independently within the same shaft.

  In addition, the user's anxiety with respect to a special operation can be reduced by performing guidance to that effect in the car that is the target of the interference avoidance operation.

  In each of the above embodiments, the case where there are two cars in the same shaft has been described as an example. However, the present invention is not limited to this, and the present invention can be similarly applied even when there are three or more cars.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various forms can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

FIG. 1 is a diagram showing a configuration of an elevator control device according to a first embodiment of the present invention. FIG. 2 is a diagram for explaining an interference avoiding operation in the first embodiment. FIG. 3 is a flowchart showing an elevator operation control process according to the first embodiment of the present invention. FIG. 4 is a diagram for explaining an interference avoiding operation in the second embodiment. FIG. 5 is a flowchart showing an elevator operation control process according to the second embodiment of the present invention. FIG. 6 is a diagram for explaining an interference avoiding operation in the third embodiment. FIG. 7 is a flowchart showing the operation control process of the elevator according to the third embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Elevator control apparatus, 12a, 12b ... Car, 13 ... Operation control part, 14 ... Car position detection part, 15 ... Interference avoidance part, 16 ... Avoidance operation guide part, 17a, 17b ... Display part, 18a, 18b ... Audio output unit.

Claims (8)

In an elevator control device having at least two cars that can independently travel in the same shaft,
Driving control means for monitoring the driving state of each car,
Car position detecting means for detecting the current position of each car,
Interference judging means for judging whether or not each car interferes based on the driving state of each car obtained from the driving control means and the current position of each car obtained from the car position detecting means. When,
When the interference judging means determines that the respective cars interfere with each other, the optimum floor that is appropriately set in accordance with the driving state of each of the cars is selected for one of the cars. An elevator control device comprising: interference avoiding means for registering a virtual call and avoiding the interference of each car. The interference judging means is configured so that each of the cars is in a state where the car in front of the traveling direction is stopped or decelerating and the distance between the car and the car traveling behind is not more than a predetermined distance. Judge that it interferes,
The interference avoidance means, based on the determination result of the interference determination means, registers a virtual call of the floor before the stop floor of the front car or the next scheduled stop floor for the rear car. The elevator control device according to claim 1. The interference judging means is configured to detect each of the above cases when the car in front of the traveling direction is stopped and the distance between the car and the next car to be stopped next to the next stop floor is not more than a predetermined distance. Judging that the car interferes,
The interference avoidance means receives the determination result of the interference determination means, and registers the virtual call of the floor ahead of the registration floor of the last car call of the rear car for the front car. The elevator control device according to claim 1, wherein: In an elevator control device having at least two cars that can independently travel in the same shaft,
Driving control means for monitoring the driving state of each car,
Car position detecting means for detecting the current position of each car,
Interference judging means for judging whether or not each car interferes based on the driving state of each car obtained from the driving control means and the current position of each car obtained from the car position detecting means. When,
Interference avoiding means for adjusting the door opening time of at least one of the cars and avoiding the interference of the cars when the interference judging means determines that the cars interfere with each other. And an elevator control device. The interference judging means is such that the front and rear cars are stopped with respect to the traveling direction, and the distance between the next stop planned floor of the front car and the next stop planned floor of the rear car is less than a predetermined distance. In the case of the above, it is determined that each of the above cars interferes,
5. The elevator control device according to claim 4, wherein the interference avoiding means shortens the door opening time of the front car from a normal time in response to the determination result of the interference determining means. The interference judging means is such that the front and rear cars are stopped with respect to the traveling direction, and the distance between the next stop planned floor of the front car and the next stop planned floor of the rear car is less than a predetermined distance. In the case of the above, it is determined that each of the above cars interferes,
5. The elevator control apparatus according to claim 4, wherein the interference avoiding means extends the door opening time of the rear passenger car more than usual in response to the determination result of the interference determining means.   The elevator control device according to claim 1 or 4, further comprising guide means for guiding a user in a passenger car to be operated by the interference avoiding means that the interference avoiding operation is being performed. Display means provided in each car, and
Voice output means provided in each of the above cars,
8. The elevator control apparatus according to claim 7, wherein the guide means guides that an interference avoiding operation is being performed through at least one of the display means and the sound output means.

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